the US government probably won't make it illegal to possess BTC, but it will never accept e.g. tax payments in BTC

also, the instant there is a non-trivial amount of commerce conducted in US jurisdictions via BTC, you will immediately see aggressive counter-measures (lawsuits, criminal charges, etc.) from the federal government

germany's minister of finance said it succinctly when there was this facebook libra thing going around

> One of the core activities of a sovereign State is to issue a currency. We will not cede this task to private companies.

https://gpil.jura.uni-bonn.de/2019/10/germany-opposes-facebo...